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Spatio‐temporal dynamics of Aedes aegypti and Aedes albopictus oviposition in an urban area of northeastern Brazil
Author(s) -
Moura Márcia Cristina Bernardo de Melo,
Oliveira Josinaldo Vidal,
Pedreira Rodrigo Moreira,
Tavares Alessandre de Medeiros,
Souza Talita Araujo,
Lima Kenio Costa,
Barbosa Isabelle Ribeiro
Publication year - 2020
Publication title -
tropical medicine and international health
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.056
H-Index - 114
eISSN - 1365-3156
pISSN - 1360-2276
DOI - 10.1111/tmi.13491
Subject(s) - aedes albopictus , aedes aegypti , geography , spatial distribution , abundance (ecology) , aedes , vector (molecular biology) , biology , ecology , veterinary medicine , seasonality , demography , larva , remote sensing , medicine , recombinant dna , biochemistry , sociology , gene
Objective The objective of this study was to analyse abundance and spatial distribution of Aedes aegypti and Aedes albopictus oviposition in the city of Natal‐RN, 2016 to 2018. Methods Three hundred and seven oviposition traps were installed covered the whole city and were monitored weekly from January 2016 to December 2018. To verify the abundance of the vector based on its location, the formation of oviposition clusters was studied using the Kernel statistics. Egg Density Index (EDI) and Oviposition Positivity Index (OPI) values were calculated. Results Temperature and humidity presented weak and very weak correlation, respectively, with the oviposition indicators. The median of oviposition positivity index (OPI) was 60.5%, and the egg density index (EDI) was 45.4 eggs/trap. The OPI (71.1%) was higher in the second quarter of the year. The areas with the most persistent oviposition are located in a continuous strip that extends from the extreme of the northern district and extends along the western district of the city. Also noteworthy is the proximity to the strategic points. Conclusion The spatio‐temporal distribution of oviposition revealed that there is spatial segregation and marked seasonality. Therefore, this study highlights the importance of maintaining surveillance targeting and control strategies focused on these areas, especially during the most important period of the year.